EP3041058B1 - Multilayer transformable device and display device comprising the same - Google Patents

Multilayer transformable device and display device comprising the same Download PDF

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Publication number
EP3041058B1
EP3041058B1 EP15195175.3A EP15195175A EP3041058B1 EP 3041058 B1 EP3041058 B1 EP 3041058B1 EP 15195175 A EP15195175 A EP 15195175A EP 3041058 B1 EP3041058 B1 EP 3041058B1
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European Patent Office
Prior art keywords
transformable
layer
multilayer
sub
polymer
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German (de)
English (en)
French (fr)
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EP3041058A1 (en
Inventor
Myungjin Lim
Suseok Choi
Yongsu Ham
Taeheon Kim
Yongwoo Lee
Seulgi Choi
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LG Display Co Ltd
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LG Display Co Ltd
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Priority claimed from KR1020150086831A external-priority patent/KR102381748B1/ko
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
    • H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/857—Macromolecular compositions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper

Definitions

  • the present disclosure relates to a multilayer transformable device and a display device including the same and, more specifically, to a multilayer transformable device having enhanced bending ability and a display device including the same.
  • a conventional display device has used a vibration motor such as an eccentric rotating mass vibration motor (ERM) or a linear resonance actuator (LRA) as a transformable device.
  • the vibration motor is designed to vibrate the whole display device, and thus has a problem that a mass body needs to be increased in size to increase vibration power.
  • the vibration motor has disadvantages in that frequency modulation for adjusting a level of vibration is difficult, a speed of response is significantly low, and the vibration motor is not suitably used for the flexible display device.
  • SMA shape memory alloy
  • EAC electro-active ceramics
  • EAP electro-active polymer
  • the EAP refers to a polymer that can be deformed by electrical stimulation, and refers to a polymer that can repeatedly expand, contract and bend by electrical stimulation.
  • a ferroelectric polymer and a dielectric elastomer have been mainly used.
  • ferroelectric polymer may include polyvinylidene fluoride (PVDF) or P(VDF-TrFE)(Poly(VinyliDene Fluoride)-trifluoroethylene), and examples of the dielectric elastomer may include a silicone-based polymer, a urethane-based polymer, an acrylic-based polymer, and the like.
  • the transformable layer that uses only one transformable layer including the EAP has difficulty in implementing a sufficient driving displacement.
  • a thickness of the transformable layer is increased to enhance a driving displacement, bending ability is restricted due to the thickness.
  • the transformable layer has a high driving voltage, and thus may not be used without change for a display device such as a mobile display, which has a relatively low voltage.
  • WO 03/081762 A1 describes an electro-active polymer device for moving fluids.
  • a multilayer construction may comprise any even number of polymer layers in which the odd number polymer layers are electrodes and the even number polymer layers are not.
  • WO 2005/117170 A1 describes a multilayer electroactive polymer composite material.
  • the multilayer electroactive polymer composite material is made from individual layers that can be seamlessly bonded to one another.
  • US 2013/286462 A1 describes a flexible display device including a display body having flexibility, an initial shape forming substrate that is attached on one surface of the display body, and an actuator that is attached on another surface of the initial shape forming substrate.
  • a plurality of layers of a transformable device are stacked in order to decrease a driving voltage while enhancing bending ability of the transformable device.
  • a multilayer transformable device including a plurality of transformable layers has an advantage over a transformable device including only one transformable layer in that a greater driving displacement can be implemented at the same thickness.
  • a dielectric elastomer may be used to manufacture the multilayer transformable device, so that it is possible to easily and alternately stack an electrode and a transformable layer, e.g. using a solution casting scheme.
  • the multilayer transformable device using only the dielectric elastomer may have a limit of a dielectric constant, and thus has difficulty in implementing a sufficient driving displacement.
  • EAPs electro-active polymers
  • a sub-transformable layer may be disposed between unit transformable devices.
  • the sub-transformable layer includes a different type of EAP from a particular EAP used for a plurality of unit transformable devices.
  • a transformable layer having a high permittivity may be combined with a sub-transformable layer.
  • a sub-transformable layer which has a high permittivity and is disposed between unit transformable devices may function as an adhesive layer.
  • an aspect of the present disclosure provides a multilayer transformable device comprising a plurality of unit transformable devices.
  • each of the unit transformable devices includes a first or lower electrode, a second or upper electrode, and a transformable layer in between.
  • the transformable layer may include an electro-active polymer (EAP).
  • EAP electro-active polymer
  • a sub-transformable layer may be disposed between the plurality of unit transformable devices, and the sub-transformable layer may include a sub-EAP different from the EAP in the unit transformable devices. Since the sub-transformable layer is disposed between the plurality of unit transformable devices, the transformable device has an enhanced driving displacement and a decreased driving voltage.
  • At least some of the transformable layers of the unit transformable devices may include electro-active polymers different from each other.
  • the sub- electro-active polymer of the sub-transformable layer may be different from the electro-active polymer of the neighboring unit transformable devices.
  • the electro-active polymer in all unit transformable devices may be the same.
  • the EAP may be a polyvinylidene fluoride (PVDF)-based polymer, and the sub-EAP may be a dielectric elastomer.
  • PVDF polyvinylidene fluoride
  • the PVDF-based polymer may be a PVDF homo-polymer or a PVDF co-polymer.
  • the transformable layer may be stretched or polled.
  • the dielectric elastomer may be polydimethyl siloxane (PDMS).
  • the sub-transformable layer may further include a high-dielectric filler.
  • the high-dielectric filler may correspond to at least one selected from the group consisting of piezoelectric ceramics, carbon nanoparticles, metal nanoparticles, and a conductive polymer.
  • the high-dielectric filler may correspond to at least one selected from the group consisting of barium titanate (BaTiO 3 ) and PbZrO 3 -PbTiO 3 (PZT).
  • a weight ratio of the dielectric elastomer to the high-dielectric filler may be in a range of 99 : 1 to 50 : 50.
  • the sub-transformable layer may have a relative permittivity measured at 1 kHz of 5 or more.
  • the sub-transformable layer may have an adhesive strength of 1500 gf/inch or more, that is 579.133 N/m.
  • the sub-transformable layer may have a thickness in a range of 1 to 300 ⁇ m.
  • the sub-transformable layer may contract or expand in the same direction as a direction in which the transformable layer contracts or expands.
  • a display device includes a display panel, a touch panel, and a multilayer transformable device, according to any one of the examples described herein.
  • the multilayer transformable device comprises a plurality of unit transformable devices.
  • Each of the unit transformable devices may include a first or lower electrode, a second or upper electrode, and a transformable layer between the first and second electrode, e.g. including an EAP.
  • a sub-transformable layer may be disposed between the plurality of unit transformable devices.
  • the sub-transformable layer may include a sub-EAP different from the EAP.
  • the display device may be configured to be deformed into various shapes as the transformable device is deformed, and thus the display device provides an output deformed into various shapes.
  • the display panel and/or the touch panel may include a flexible substrate.
  • the multilayer transformable device may be provided below the display panel, e.g. between the display panel and a lower case. That is, when the display device emits light, i.e. displays content, through a front side thereof, the multilayer transformable device may be provided behind the display panel.
  • the element or layer When an element or layer is described to be "on" another element or layer, the element or layer may be disposed directly on the other element or layer or disposed on the other element or layer with a still another element or layer interposed therebetween.
  • first the terms “first”, “second”, and the like are used to describe various components, the components are not limited by the terms. The terms are merely used to distinguish one component from another component. Thus, a first component mentioned below may correspond to a second component within the present disclosure.
  • a size and a thickness of each configuration illustrated in the drawings are for convenience of description, and the present disclosure is not necessarily limited to the size and thickness of the illustrated configuration.
  • Respective features of several embodiments of the present disclosure may be wholly or partially combined or united with each other, and interlocking and driving can be technically configured in various manners.
  • Respective embodiments may be implemented independently of each other or implemented together by being linked to each other.
  • a transformable layer refers to a layer, a shape of which can be deformed by implementing contraction, expansion, or bending in response to an applied voltage.
  • FIG. 1 is a schematic cross-sectional view for a description of a configuration of a multilayer transformable device 100 according to an embodiment of the present disclosure.
  • the multilayer transformable device 100 includes a first transformable device 110 having a first transformable layer 112, a first electrode 111, i.e. a first lower electrode 111, and a second electrode 113, i.e. a first upper electrode 113, a sub-transformable layer 120 disposed on the first transformable device 110, and a second transformable device 130 which is disposed on the sub-transformable layer 120 and has a second transformable layer 132, a first electrode 131, i.e.
  • a second lower electrode 131 and a second electrode 133, i.e. a second upper electrode 133.
  • the terms “lower” and “upper” refer to an orientation of the multilayer transformable device 100 with the first transformable device 110 being disposed below the second transformable device 100 with respect to direction of gravity.
  • the first transformable device 110 is a unit transformable device included in the multilayer transformable device 100, and implements vibration or bending by being deformed by a voltage applied to the first lower electrode 111 and the first upper electrode 113. As illustrated in FIG. 1 , the first transformable device 110 includes the first transformable layer 112 which includes an electro-active polymer (EAP), the first lower electrode 111, and the first upper electrode 113.
  • EAP electro-active polymer
  • the first transformable layer 112 is disposed between the first lower electrode 111 and the first upper electrode 113 to function as an electro-active layer that is deformed by electrical stimulation.
  • the first transformable layer 112 includes the EAP corresponding to a polymer material deformed by electrical stimulation.
  • the first transformable layer 112 may include a silicone-based, urethane-based, or acrylic-based dielectric elastomer, or a ferroelectric polymer such as a polyvinylidene fluoride (PVDF)-based polymer.
  • PVDF polyvinylidene fluoride
  • the dielectric elastomer may contract or expand due to a coulombic force generated in response to a voltage applied to the first transformable layer 112, thereby deforming the transformable device 100.
  • an alignment direction of dipoles in the first transformable layer 112 may be changed in response to a voltage applied to the first transformable layer 112, thereby deforming the transformable device 100.
  • the EAP included in the first transformable layer 112 may be the PVDF-based polymer corresponding to the ferroelectric polymer which is maintained in a polarization state in a natural state.
  • the PVDF-based polymer has a greater permittivity and a greater driving displacement than those of the dielectric elastomer, and has an advantage in that deformation of the multilayer transformable device 100 can be easily controlled using a polarization direction of the PVDF-based polymer.
  • a description will be given on the assumption that the first transformable layer 112 includes the PVDF-based polymer.
  • the PVDF-based polymer refers to a polymer that includes a PVDF repeating unit in a main chain of the polymer.
  • Examples of the PVDF-based polymer may include a PVDF homo-polymer or a PVDF co-polymer.
  • the first transformable layer 112 may be manufactured in a form of a film.
  • the transformable layer may be formed using a solution casting scheme of applying a solution to a substrate and drying the solution.
  • the multilayer transformable device may be manufactured by alternately stacking an electrode and a transformable layer since the dielectric elastomer may have a permittivity using a simple solution casting scheme without having to be manufactured in a form of a film.
  • the PVDF-based polymer may not have a high permittivity. But, a permittivity of the transformable layer using PVDF-based polymer may ensured using at least one of a stretching process and a polling process.
  • the PVDF-based polymer needs to be manufactured in a separate film type using coextrusion, and the like.
  • the film-type PVDF-based polymer has a permittivity when a polarization direction is uniformly formed through the stretching process or the polling process.
  • the PVDF-based polymer used for the first transformable layer 112 may be manufactured in a form of a film and subjected to the stretching process or the polling process.
  • the stretching process refers to a process of pulling and orienting a polymer chain in a heated state
  • the polling process refers to a process of arranging atoms having particular charges in one direction by applying a high direct current (DC) voltage to a polymer.
  • DC direct current
  • F fluorine
  • the first transformable layer 112 may acquire strong polarization effect. More specifically, PVDF corresponding to the PVDF homo-polymer may be stretched and polled and used as a transformable layer.
  • P(VDF-TrFE) Poly(VinyliDene Fluoride)-trifluoroethylene corresponding to the PVDF co-polymer may be polled and used as a transformable layer.
  • the transformable layer including the PVDF-based polymer is manufactured in a form of a film to acquire a high permittivity.
  • a thickness of the first transformable layer 112 may be selected based on power consumption and a driving voltage necessary to operate the first transformable device 110 and whether a normal operation of the first transformable device 110 can be performed.
  • the thickness of the first transformable layer 112 may be preferably 10 ⁇ m to 300 ⁇ m, and more preferably 50 ⁇ m to 150 ⁇ m.
  • a sufficient voltage necessary for a normal operation of the first transformable device 110 may not be applied. Therefore, the first transformable device 110 may not normally operate.
  • the thickness of the first transformable layer 112 is greater than 300 ⁇ m, an excessive driving voltage is required to drive the first transformable device 110, and thus power consumption may excessively increase.
  • the first transformable layer 112 may expand or contract in response to an electric field applied by the first lower electrode 111 and the first upper electrode 113. In this instance, whether the first transformable layer 112 expands or contracts may be determined according to a polarization direction of the first transformable layer 112 and a direction of an electric field applied to the first transformable layer 112.
  • the PVDF-based polymer used for the first transformable layer 112 may have a polarization direction determined according to atom arrangement. That is, the polarization direction is determined according to arrangement of F atoms having high electronegativity. For example, when the first transformable layer 112 is disposed such that fluorine (F) atoms are disposed in a lower part and hydrogen (H) atoms including few electrons are disposed in an upper part, the polarization direction of the first transformable layer 112 may become an upward direction, i.e. towards the second transformable device 130.
  • F fluorine
  • H hydrogen
  • the first transformable layer 112 may contract or expand according to the polarization direction of the first transformable layer 112 and the direction of the electric field applied to the first transformable layer 112. For example, the first transformable layer 112 expands when the polarization direction of the first transformable layer 112 is different from the direction of the electric field applied to the first transformable layer 112, and the first transformable layer 112 contracts when the polarization direction of the first transformable layer 112 is the same as the direction of the electric field applied to the first transformable layer 112. Contraction or expansion of the first transformable layer 112 results in bending effect of the device by the transformable device coming into contact with the display panel or other substrates.
  • the first lower electrode 111 and the first upper electrode 113 perform a function of applying an electric field to cause deformation of the first transformable layer 112.
  • the first lower electrode 111 is disposed on a first (e.g. lower) surface of the first transformable layer 112, and the first upper electrode 113 is disposed on a second (e.g. upper) surface of the first transformable layer 112.
  • the first lower electrode 111 and the first upper electrode 113 may be made of a conductive material.
  • the first lower electrode 111 and the first upper electrode 113 may be made of a metal material such as gold (Au), copper (Cu), titanium (Ti), chrome (Cr), molybdenum (Mo), aluminum (Al), and an Al-Cu alloy, or a conductive polymer such as PEDOT[Poly(3,4-ethylenedioxythiophene)]:PSS [Poly(4-styrenesulfonic acid)], polypyrrole, and polyaniline.
  • PEDOT[Poly(3,4-ethylenedioxythiophene)]:PSS [Poly(4-styrenesulfonic acid)], polypyrrole, and polyaniline a conductive polymer
  • PEDOT[Poly(3,4-ethylenedioxythiophene)]:PSS [Poly(4-styrenesulfonic acid)] polypyrrole
  • polyaniline polyani
  • first lower electrode 111 and the first upper electrode 113 may be configured as soft electrodes. Thus, they are suitable for smoothly repeated operation and deformation of the multilayer transformable device 100 including the first transformable layer 112.
  • An electrode manufactured by mixing an elastomer with carbon conductive grease, carbon black, or carbon nanotube may be used as each of the soft electrodes.
  • each of the first lower electrode 111 and the first upper electrode 113 preferably has a thickness of 200 nm or less, and more preferably has a thickness of 100 nm or less.
  • the thickness is not limited thereto.
  • the first lower electrode 111 and the first upper electrode 113 may be disposed on one surface of the first transformable layer 112 using various schemes.
  • the first lower electrode 111 and the first upper electrode 113 may be disposed on both surfaces of the first transformable layer 112 using a scheme such as sputtering, printing, and slit coating.
  • the first lower electrode 111 and the first upper electrode 113 may be simultaneously disposed in the same process.
  • the first lower electrode 111 and the first upper electrode 113 form an electric field in response to a voltage applied from outside.
  • voltages having different levels or voltages having opposite electric properties may be applied to the first lower electrode 111 and the first upper electrode 113 in order to form an electric field in the first transformable layer 112.
  • a negative voltage or a ground voltage may be applied to the first upper electrode 113 when a positive voltage is applied to the first lower electrode 111
  • a positive voltage or a ground voltage may be applied to the first upper electrode 113 when a negative voltage is applied to the first lower electrode 111.
  • an electric property of a voltage applied to the first lower electrode 111 and an electric property of a voltage applied to the first upper electrode 113 are changed to opposite properties, a direction of an electric field is changed accordingly.
  • An alternating current (AC) voltage or a DC voltage may be applied to the first lower electrode 111 and the first upper electrode 113.
  • AC voltage alternating current
  • DC voltage DC voltage
  • the first transformable device 110 may be maintained in a bent state.
  • the sub-transformable layer 120 is disposed between the first transformable device 110 and the second transformable device 130 to function as a minor electro-active layer which is deformed by electrical stimulation together with the first transformable layer 112 and the second transformable layer 132.
  • the sub-transformable layer 120 of the present disclosure includes a sub-EAP, a type of which is different from that of an EAP included in a transformable layer of an adjacent unit transformable device.
  • the sub-EAP included in the sub-transformable layer 120 may include a silicone-based, urethane-based, or acrylic-based dielectric elastomer, or a ferroelectric polymer such as a PVDF-based polymer.
  • the present disclosure is not limited thereto.
  • the sub-transformable layer 120 may include the ferroelectric polymer when the first transformable device 110 and the second transformable device 130 include the dielectric elastomer, and the sub-transformable layer 120 may include the dielectric elastomer when the first transformable device 110 and the second transformable device 130 include the ferroelectric polymer.
  • the first transformable device 110 and the second transformable device 130 include a different EAP from that of the sub-transformable layer 120, it is possible to implement a multilayer transformable device having an enhanced driving displacement and a low driving voltage when compared to a conventional multilayer transformable device manufactured using only the dielectric elastomer.
  • the sub-transformable layer 120 include the dielectric elastomer and a high-dielectric filler as a sub-EAP.
  • the sub-transformable layer 120 further includes the high-dielectric filler in addition to the dielectric elastomer, the sub-transformable layer 120 has a higher permittivity than that of a conventional dielectric elastomer, and thus a driving displacement of the multilayer transformable device may be enhanced.
  • a description will be given on the assumption that the sub-transformable layer 120 includes the dielectric elastomer and the high-dielectric filler.
  • the sub-transformable layer 120 bonds the first transformable device 110 and the second transformable device 130 together.
  • the electrode and the transformable layer may be alternately stacked using the solution casting scheme.
  • the multilayer transformable device is manufactured using the ferroelectric polymer such as the PVDF homo-polymer
  • the stretching process or the polling process needs to be performed.
  • the PVDF-based homo-polymer may not be directly stacked on the electrode as the dielectric elastomer using the solution casting scheme.
  • a unit transformable device in which electrodes are stacked on both surfaces of a PVDF-based polymer film subjected to the stretching process or the polling process, needs to be prepared.
  • an adhesive layer needs to be disposed between unit transformable devices to stack the respective unit transformable devices.
  • a conventional optical adhesive such as an acrylic-based adhesive, a polyvinyl alcohol-based adhesive, and a polyurethane-based adhesive has a low permittivity, and has a disadvantage in that performance of the multilayer transformable device is degraded due to a thickness of the optical adhesive.
  • the sub-transformable layer 120 disposed between the first transformable device 110 and the second transformable device 130 is preferably a high-dielectric adhesive that may function as an adhesive layer in addition to an electro-active layer.
  • the dielectric elastomer included in the sub-transformable layer 120 may correspond to at least one selected from the group consisting of an acrylic-based polymer, a urethane-based polymer, and a silicone-based polymer.
  • the dielectric elastomer is not limited thereto.
  • the dielectric elastomer of the present disclosure is preferably the silicone-based polymer, for example, polydimethyl siloxane (PDMS) which can provide sufficient adhesive strength and operate in a wide temperature range.
  • PDMS polydimethyl siloxane
  • the dielectric elastomer preferably corresponds to a compound having a great polarity, that is, a great permittivity in order to obtain great deformation with a small driving voltage.
  • a relative permittivity measured at 1 kHz be greater than or equal to 2.5.
  • the dielectric elastomer may be a polymer having a weight-average molecular weight of 10,000 g/mol or more considering a mechanical property required for the multilayer transformable device 100.
  • the high-dielectric filler of the present disclosure is not particularly limited, the high-dielectric filler preferably includes at least one selected from the group consisting of piezoelectric ceramics, carbon nanoparticles, metal nanoparticles, and a conductive polymer as a material that can enhance a permittivity of the sub-transformable layer 120 by being mixed with the dielectric elastomer.
  • piezoelectric ceramics is not particularly limited, piezoelectric ceramics preferably includes a piezoelectric metal oxide including a metal atom such as lead (Pb), zirconium (Zr), titanium (Ti), and barium (Ba).
  • piezoelectric ceramics may correspond to perovskite-type oxides including PbZrO 3 -PbTiO 3 (PZT) or barium titanate (BaTiO 3 ).
  • the carbon nanoparticles is not particularly limited, but the carbon nanoparticles preferably include at least one selected from the group consisting of a single-walled carbon nanotube (SWCNT), a double-walled carbon nanotube (DWCNT), a multi-walled carbon nanotube (MWCNT), graphene, graphite, carbon black, carbon fiber, and fullerene.
  • SWCNT single-walled carbon nanotube
  • DWCNT double-walled carbon nanotube
  • MWCNT multi-walled carbon nanotube
  • graphene graphite
  • carbon black carbon fiber
  • fullerene fullerene.
  • the SWCNT is more preferable in that the permittivity of the sub-transformable layer 120 is greatly enhanced in a low-frequency region.
  • the metal nanoparticles may correspond to a nanowire, a nanorod, a nanopore, or a nanotube including gold (Au) or silver (Ag).
  • the conductive polymer is not particularly limited, but the conductive polymer preferably includes at least one selected from the group consisting of polyfluorene, polyphenylene, polypyrene, polyazulene, polynaphthalene, polyacetylene (PAC), poly(p-phenylene vinylene) (PPV), polypyrrole (PPY), polycarbazole, polyindole, polyazepine, poly(thienylene vinylene), poly(thienylene vinylene), polyaniline (PANI), poly(thiophene), poly(p-phenylene sulfide) (PPS), poly(3,4-ethylenedioxy thiophene (PEDOT), poly(3,4- ethylenedioxy thiophene) doped with poly(styrene sulfonate) (PSS)) (PEDOT:PSS), poly(3,4- ethylenedioxy thiophene)-tetramethacrylate (PEDOT-TMA), and polyfur
  • the conductive polymer preferably has a conductivity of 10 -6 S/cm or more, and more preferably has a conductivity of 10 -2 S/cm or more.
  • the conductivity of the conductive polymer is higher than 10 -6 S/cm, the permittivity of the sub-transformable layer 120 may be enhanced by interaction with the dielectric elastomer.
  • a weight ratio of the dielectric elastomer to the high-dielectric filler is preferably in a range of 99 : 1 to 50 : 50, and more preferably in a range of 90 : 10 to 60 : 40.
  • a contained quantity of the high-dielectric filler is below 1 %, enhancement of the permittivity of the sub-transformable layer 120 is inadequate, and the sub-transformable layer 120 had difficulty in functioning as another transformable layer.
  • the contained quantity of the high-dielectric filler exceeds 50 %, permittivity enhancement effect is saturated or degraded.
  • an adhesive strength of the sub-transformable layer 120 may be degraded.
  • the sub-transformable layer 120 preferably has a permittivity of 5.0 or more, and more preferably has the permittivity of 7.0 or more when the permittivity is measured at 1 kHz.
  • PDMS which is most widely used as the dielectric elastomer, has a permittivity in a range of about 2.5 to 3.0.
  • the permittivity can be increased to 7.0 or more, and preferably increased to 9.0 or more.
  • the sub-transformable layer 120 preferably has an adhesive strength of 1500 gf/inch or more, i.e. 579 N/m or more, and more preferably has the adhesive strength of 1800 gf/inch or more, i.e. 695 N/m or more, when the adhesive strength is measured using a tensile strength meter. If the adhesive strength of the sub-transformable layer 120 is higher than 579 N/m, an adhesive state between the unit transformable devices 110 and 130 may be maintained even when the multilayer transformable device 100 is deformed.
  • the sub-transformable layer 120 preferably has a thickness in a range of 1 ⁇ m to 300 ⁇ m, and more preferably has the thickness in a range of 10 ⁇ m to 150 ⁇ m.
  • the thickness of the sub-transformable layer 120 is below 1 ⁇ m, enhancement effect of the driving displacement of the multilayer transformable device 100 is inadequate.
  • the thickness of the sub-transformable layer 120 exceeds 300 ⁇ m, a thickness of the multilayer transformable device 100 may increase, and thus the driving displacement may be degraded, and a weight of the multilayer transformable device 100 may greatly increase.
  • the sub-transformable layer 120 is disposed between the first transformable device 110 and the second transformable device 130.
  • a first or lower surface of the sub-transformable layer 120 comes into contact with the second electrode 113 of the first transformable device 110 (so called first upper electrode 113), and a second or upper surface of the sub-transformable layer 120 comes into contact with the first electrode 131 of the second transformable device 130131 (so called second lower electrode 131).
  • Maxwell stress refers to a force applied such that the sub-transformable layer 120 contracts in a thickness direction and expands in a length direction.
  • the magnitude (P) of Maxwell stress is proportional to a relative permittivity ( ⁇ r ), an electric field (E), and a voltage (V).
  • ⁇ r relative permittivity
  • E electric field
  • V voltage
  • the sub-transformable layer 120 has a high permittivity. As can be confirmed from Equation 1, when the fact that Maxwell stress is proportional to a permittivity is considered, the sub-transformable layer 120 having a high permittivity may function as another electro-active layer.
  • the sub-transformable layer 120 may contract or expand by the electrodes formed in the transformable device.
  • voltages having different levels or voltages having opposite electrical properties are applied to the first lower electrode 111 and the first upper electrode 113 of the first transformable device 110 and the second lower electrode 131 and the second upper electrode 133 of the second transformable device 130.
  • a positive voltage and a negative voltage are alternately applied to the electrodes 11, 113, 131, and 133 of the unit transformable devices 110 and 130.
  • a positive voltage is applied to the first lower electrode 111 of the first transformable device 110
  • a negative voltage is applied to the first upper electrode 113 of the first transformable device 110
  • a positive voltage is again applied to the second lower electrode 131 of the second transformable device 130
  • a negative voltage is again applied to the second upper electrode 133 of the second transformable device 130.
  • the sub-transformable layer 120 may be shifted by electrostatic attraction generated due to the negative voltage applied to the first upper electrode 113 of the first transformable device 110 and the positive voltage applied to the second lower electrode 131 of the second transformable device 130.
  • the sub-transformable layer 120 preferably contracts or expands in the same direction as that of the first transformable layer 112 and the second transformable layer 132.
  • the present disclosure is not limited thereto.
  • the multilayer transformable device 100 is bonded with a substrate of the display panel, and the like to implement bending of the whole device. In this case, bending ability of the device may be maximized when a contraction or expansion direction of the first transformable layer 112 and the second transformable layer 132 is the same as that of the sub-transformable layer 120.
  • contraction or expansion of the PVDF-based polymer may be adjusted according to a polarization direction and a direction of an applied electric field.
  • the first transformable layer 112 and the second transformable layer 132 may expand in length directions simultaneously with the sub-transformable layer 120 if the first transformable layer 112 and the second transformable layer 132 are configured to have different polarization directions and different directions of applied electric fields.
  • the second transformable device 130 is disposed on the sub-transformable layer 120.
  • the second transformable device 130 is a unit transformable device included in the multilayer transformable device 100, and implements vibration or bending by being deformed by a voltage applied to the second lower electrode 131 and the second upper electrode 133.
  • Each of the second transformable layer 132, the second lower electrode 131, and the second upper electrode 133 included in the second transformable device 130 may be configured to be the same as each of the first transformable layer 112, the first lower electrode 111, and the first upper electrode 113 included in the first transformable device 110.
  • Respective specific configurations and effects of the second transformable device 130 are the same as those of the first transformable device 110, and thus repeated description will be omitted.
  • the multilayer transformable device 100 may include the sub-transformable layer 120 including the dielectric elastomer and the high-dielectric filler between the unit transformable devices 110 and 130 including the PVDF-based polymer as transformable layers.
  • An adhesive layer is needed to form a transformable device using the PVDF-based polymer as a transformable layer in a multilayer structure.
  • a conventionally used adhesive layer has a low permittivity.
  • a permittivity of an optical clear adhesive (OCA) measured at 1 kHz is 3.0 or less.
  • OCA optical clear adhesive
  • the conventional adhesive layer has a low permittivity, and thus may be used only for adhesion.
  • the adhesive layer increases a thickness of a transformable device. As a result, enhancement of a driving displacement of the transformable device is impeded.
  • the sub-transformable layer 120 is an adhesive layer having an excellent permittivity based on the dielectric elastomer.
  • the sub-transformable layer 120 functions not only as an adhesive but also as another transformable layer by electrostatic attraction occurring by electrodes which come into contact with both surfaces of the sub-transformable layer 120.
  • the sub-transformable layer 120 may be deformed together with the first transformable device 110 and the second transformable device 130 when the first transformable device 110 and the second transformable device 130 are deformed while being interposed between the first transformable device 110 and the second transformable device 130.
  • the multilayer transformable device 100 uses the sub-transformable layer 120 having a high permittivity instead of the conventional adhesive simultaneously with using the PVDF-based polymer having a higher permittivity than that of the dielectric elastomer, and thus may have a significantly enhanced driving displacement.
  • a total permittivity of the multilayer transformable device 100 is enhanced, a driving voltage of the multilayer transformable device 100 may be decreased.
  • FIG. 2 is a schematic cross-sectional view for a description of a multilayer transformable device 200 according to another embodiment of the present disclosure.
  • the multilayer transformable device 200 includes a first transformable device 210 having a first transformable layer 212, a first lower electrode 211, and a first upper electrode 213, a first sub-transformable layer 220 disposed on the first transformable device 210, a second transformable device 230 which is disposed on the first sub-transformable layer 220 and has a second transformable layer 232, a second lower electrode 231, and a second upper electrode 233, a second sub-transformable layer 240 disposed on the second transformable device 230, and a third transformable device 250 which is disposed on the second sub-transformable layer 240 and has a third transformable layer 252, a third lower electrode 251, and a third upper electrode 253.
  • the multilayer transformable device 200 of FIG. 2 is different from the multilayer transformable device 100 of FIG. 1 in that the multilayer transformable device 200 has a configuration in which three unit transformable devices are stacked.
  • the multilayer transformable device according to the present embodiment may include two or more unit transformable devices, and the separate sub-transformable layer may be disposed respectively between the respective unit transformable devices.
  • the first transformable layer 212, the second transformable layer 232, and the third transformable layer 252 included in the respective unit transformable devices 210, 230, and 250 include a different type of EAP from that of the first sub-transformable layer 220 and the second sub-transformable layer 240.
  • the multilayer transformable device 200 of FIG. 2 has substantially the same configuration as that of the multilayer transformable device 100 of FIG. 1 except that the third transformable device 250 and the second sub-transformable layer 240 are further included, and thus repeated description will be omitted.
  • the second sub-transformable layer 240 is disposed on the second transformable device 230. Similarly to the first sub-transformable layer 220, the second sub-transformable layer 240 ineludes a different type of EAP from that of a transformable layer of an adjacent unit transformable device.
  • the second sub-transformable layer 240 may have the same configuration as that of the sub-transformable layer 120 of FIG. 1 .
  • the third transformable device 250 is disposed on the second sub-transformable layer 240.
  • the third transformable device 250 may have the same configuration as that of at least one of the first transformable device 210 and the second transformable device 230.
  • each of the first sub-transformable layer 220 and the second sub-transformable layer 240 is deformed by an electric field generated from electrodes coming into contact with both surfaces.
  • the multilayer transformable device 200 As a result, in the multilayer transformable device 200, the respective unit transformable devices 210, 230, and 250, the first sub-transformable layer 220, and the second sub-transformable layer 240 are deformed together by applied voltages.
  • the multilayer transformable device 200 has a greater driving displacement than that of a multilayer transformable device manufactured only using the dielectric elastomer or a multilayer transformable device including the conventional adhesive layer having the low permittivity.
  • Multilayer transformable devices of Example 1 and Comparative Examples 1 to 3 were manufactured by varying a transformable layer and a sub-transformable layer (adhesive layer) to examine effect of the present disclosure.
  • a first transformable layer and a second transformable layer, each of which has a thickness of 80 ⁇ m, were prepared by performing lamination after stretching a PVDF homo-polymer, and metal electrodes (carbon conductive grease) were deposited on both surfaces of each of the transformable layers, thereby manufacturing a first transformable device and a second transformable device, each of which has a configuration of lower electrode/transformable layer/upper electrode.
  • PDMS dielectric elastomer
  • barium titanate diameter of particle: 120 nm, measured by SEM
  • a weight ratio of PDMS to barium titanate was 60 : 40.
  • An upper electrode of the first transformable device was coated with the manufactured solution to form a sub-transformable layer (adhesive layer) having a thickness of 50 ⁇ m, and then a second transformable device was joined thereto, thereby manufacturing the multilayer transformable device of Example 1.
  • the multilayer transformable device of Comparative Example 1 was manufactured using the same scheme as that of Example 1 except that a first transformable layer and a second transformable layer including only PDMS were formed instead of using the PVDF homo-polymer.
  • a sub-transformable layer and the multilayer transformable device of Comparative Example 2 were manufacturing using the same scheme as that of Example 1 except that a substrate was coated with a mixture solution obtained by adding PDMS as a dielectric elastomer and barium titanate (diameter of particle: 120 nm, measured by SEM) as a high-dielectric filler to hexane corresponding to a solvent at a weight ratio of 60 : 40 instead of using the PVDF homo-polymer and dried to obtain a first transformable layer and a second transformable layer, each of which has a thickness of 80 ⁇ m, and then metal electrodes (carbon conductive grease) were deposited on both surfaces of each of the manufactured transformable layers, thereby manufacturing a first transformable device and a second transformable device including PDMS and the high-dielectric filler.
  • PDMS dielectric elastomer
  • barium titanate diameter of particle: 120 nm, measured by SEM
  • metal electrodes carbon conductive grease
  • the multilayer transformable device of Comparative Example 3 was manufacturing using the same scheme as that of Example 1 except that a sub-transformable layer (adhesive layer) was formed using a conventional acrylic-based OCA adhesive instead of the mixture solution of PDMS and barium titanate manufactured in Example 1.
  • a capacitance at a frequency of 1 kHz was measured using an LCR meter (4284A), and permittivities of sub-transformable layers of the multilayer transformable devices manufactured according to Example 1 and Comparative Examples 1 to 3 were calculated using Equation 2 below and measured.
  • a result of measurement is shown in Table 1 below.
  • ⁇ C ⁇ t / ⁇ o ⁇ A ( ⁇ : permittivity, C: capacitance, ⁇ 0 : permittivity in vacuum, t: thickness of transformable layer, A: contact cross-sectional area)
  • Adhesive strengths of sub-transformable layers of the multilayer transformable devices manufactured according to Example 1 and Comparative Examples 1 to 3 were measured using a tensile strength meter (Tinius Olsen, Ltd., H5KT UTM). A result of measurement is listed in Table 1 below.
  • each of a maximum radius curvature and a minimum radius curvature was measured under a condition of 2.4 kVpp using a laser device (Keyenece, Ltd., LK-G80), and then a radius curvature change value was calculated, thereby obtaining bending ability.
  • a result of measurement is listed in Table 1 below.
  • Table 1 indicates that the multilayer transformable device of Example 1, in which different types of EAPs are alternately stacked, has a significantly excellent driving displacement.
  • comparison between Example 1 and Comparative Example 1 indicates that a conventional multilayer transformable device having a configuration in which only a dielectric elastomer is stacked has a significantly small driving displacement.
  • Example 1 comparison between Example 1 and Comparative Example 2 indicates that the multilayer transformable device of Example 1 has a significantly great radius curvature change at the same voltage when compared to the multilayer transformable device of Comparative Example 2 in which all the first transformable layer, the second transformable layer, and the sub-transformable layer include the dielectric elastomer and the high-dielectric filler.
  • the multilayer transformable device of Example 1 has far superior performance when compared to a multilayer transformable device formed by simply stacking a plurality of layers of an elastomer having a high permittivity.
  • Example 1 comparison between Example 1 and Comparative Example 3 indicates that the permittivity of the sub-transformable layer of Example 1 was a remarkably enhanced when compared to the permittivity of the sub-transformable layer of Comparative Example 3 which uses a conventional adhesive, and thus a driving voltage of the multilayer transformable device decreased. More specifically, the comparison indicates that the multilayer transformable device of Example 1 has a radius curvature change which is twice as great as that of the multilayer transformable device of Comparative Example 3 at the same voltage. In other words, it can be understood that a degree of bending of the multilayer transformable device is greatly enhanced due to an excellent permittivity of the sub-transformable layer.
  • the sub-transformable layer including the dielectric elastomer and the high-dielectric filler used to bond the first transformable device and the second transformable device including the PVDF-based polymer together has a significantly high permittivity when compared to the conventional optical adhesive. Therefore, the sub-transformable layer of the present disclosure may function as another transformable layer in addition to a simple adhesive.
  • the sub-transformable layer of the present disclosure when adopted as an adhesive layer for bonding the first transformable device and the second transformable device together, the multilayer transformable device may have greatly enhanced bending ability, that is, a greatly enhanced driving displacement, and have a decreased driving voltage.
  • FIG. 3 is a schematic exploded perspective view for a description of a configuration of a display device 300 including a multilayer transformable device according to an embodiment of the present disclosure.
  • the display device 300 according to the present embodiment includes a lower cover 310, a multilayer transformable device 100, a display panel 320, a touch panel 330, and an upper cover 340.
  • the lower cover 310 is disposed below the multilayer transformable device 100 to cover lower portions of the multilayer transformable device 100, the display panel 320, and the touch panel 330.
  • the lower cover 310 protects internal components of the display device 300 from external shock and permeation of water or a foreign material.
  • the lower cover 310 may be made of a material which can be deformed together in response to change of a shape of the multilayer transformable device 100.
  • the lower cover 310 may be made of a material such as plastic having ductility.
  • the lower cover 310 is not limited thereto.
  • the multilayer transformable device 100 may be disposed below the display panel 320. Specifically, the multilayer transformable device 100 may be disposed to directly come into contact with a surface of the display panel 320, or disposed using an adhesive between a surface of the display panel 320 and a surface of the multilayer transformable device 100. Examples of the adhesive may include an optical clear adhesive (OCA) or an optical clear resin (OCR). However, the adhesive is not limited thereto.
  • the multilayer transformable device 100 may be disposed on the lower cover 310.
  • the multilayer transformable device 100 illustrated in FIG. 3 includes a first transformable device 110, a second transformable device 130, and a sub-transformable layer 120 disposed between the first transformable device 110 and the second transformable device 130.
  • the multilayer transformable device 100 may have the same configuration as that of one of the multilayer transformable devices 100 and 200 illustrated in FIGS. 1 and 2 , respectively.
  • the sub-transformable layer 120 includes different type of sub-EAP from that of an EAP included in transformable layers of adjacent unit transformable devices.
  • the sub-transformable layer 120 has an excellent permittivity, and thus may perform a function of another transformable layer in addition to a function of bonding the first transformable device 110 and the second transformable device 130 together. Therefore, when the sub-transformable layer 120 is adopted, the multilayer transformable device 100 may have further enhanced bending ability and a decreased driving voltage.
  • the multilayer transformable device 100 may be electrically connected to the display panel 320.
  • a flexible printed circuit board (FPCB) disposed on the display panel 320 and an electrode of the multilayer transformable device 100 may be electrically connected to each other through a wire.
  • the display panel 320 refers to a panel including a display element for displaying an image on the display device 300.
  • various display panels such as an organic light-emitting display panel, a liquid crystal display panel, and an electrophoresis display panel may be used as the display panel 320.
  • the display panel 320 may preferably correspond to an organic light-emitting display device.
  • the organic light-emitting display device is a display device that allows a current to flow in an organic light-emitting layer such that the organic light-emitting layer emits light, and emits light having a particular wavelength using the organic light-emitting layer.
  • the organic light-emitting display device includes at least a cathode, the organic light-emitting layer, and an anode.
  • the transformable device 100 disposed below the display panel 320 may be deformed with flexibility, and thus the organic light-emitting display device may be configured to be deformed with flexibility.
  • the organic light-emitting display device is a flexible organic light-emitting display device having flexibility, and includes a flexible substrate.
  • the flexible organic light-emitting display device may be deformed in various directions and at various angles by a force applied from outside.
  • a description will be given on the assumption that the display panel 320 is configured as the flexible organic light-emitting display device for convenience of description.
  • the multilayer transformable device 100 disposed below the display panel 320 may be deformed with ductility, and thus the organic light-emitting display device may be configured to be deformed with ductility.
  • the organic light-emitting display device is a flexible organic light-emitting display device having ductility, and includes a flexible substrate.
  • the flexible organic light-emitting display device may be deformed in various directions and at various angles by a force applied from outside.
  • the touch panel 330 is disposed on the display panel 320.
  • the touch panel 330 refers to a panel that detects a touch input to the display device 300 by a user and performs a function of providing touch coordinates.
  • the touch panel 330 may be divided according to a disposed position. For example, it is possible to use an add-on scheme in which the touch panel 330 is attached to an upper surface of the display panel 320, an on-cell scheme in which the touch panel 330 is deposited on the display panel 320, an in-cell scheme in which the touch panel 330 is formed in the display panel 320, and the like.
  • the touch panel 330 may be divided according to an operation scheme. For example, it is possible to use a capacitive touch panel, a resistive touch panel, an ultrasonic touch panel, an infrared touch panel, and the like.
  • the capacitive touch panel may be preferably used as the touch panel 330.
  • the touch panel 330 may be electrically connected to the multilayer transformable device 100.
  • the touch panel 330 may be electrically connected to electrodes of the multilayer transformable device 100 such that various touch signals or voltages input by the touch panel 330 may be delivered to the multilayer transformable device 100.
  • the touch panel 330 may be flexible in order to be deformed together with the multilayer transformable device 100.
  • the upper cover 340 is disposed on the touch panel 330 to cover upper portions of the multilayer transformable device 100, the display panel 320, and the touch panel 330.
  • the upper cover 340 may function similarly to the lower cover 310.
  • the upper cover 340 may be made of the same material as that of the lower cover 310.
  • the upper cover 340 may be made of a material having ductility so as to be deformed together with the touch panel 330 and the display panel 320 which may be deformed into various shapes by the multilayer transformable device 100.
  • the upper cover 340 may be made of a material such as plastic having ductility, but is not limited thereto.
  • the display device 300 is deformed together with the multilayer transformable device 100 in response to a voltage applied to the multilayer transformable device 100.
  • the display panel 320 and the touch panel 330 joined to the multilayer transformable device 100 are deformed together when the first transformable device 110, the second transformable device 130, and the sub-transformable layer 120 included in the multilayer transformable device 100 are deformed.
  • the display device 300 can be deformed.
  • the multilayer transformable device 100, the display panel 320, and the touch panel 330 may be combined into one entity, and the display device 300 may be deformed into various shapes by the multilayer transformable device 100.
  • a deformed appearance of the display device 300 due to deformation of the multilayer transformable device 100 will be described below with reference to FIG. 4 .
  • FIG. 4 is a diagram illustrating a state of a display device 400 including the multilayer transformable device to describe variously deformed shapes of the display device 400 according to an embodiment of the present disclosure.
  • a description will be given on the assumption that the display device 400 is a smartphone for convenience of description.
  • a portion of the display device 400 may be bent upward or downward.
  • a multilayer transformable device is fixed to a lower portion of a display screen 410, and the multilayer transformable device and the whole display device 400 are deformed when the multilayer transformable device is driven.
  • a portion of the display device 400 may be bent upward or downward.
  • the portion of the multilayer transformable device is periodically bent upward or downward, the portion of the display device 400 may be bent upward or downward.
  • the portion of the multilayer transformable device remains bent upward or downward, the portion of the display device 400 may remain bent upward or downward.
  • the portion of the display device 400 may be bent upward or downward. That is, when the display device 400 receives a message or a voice call, the portion of the display device 400 may be bent upward or downward as an output in response to the received message or voice call.
  • a bent portion, a bending direction, a bending time, a period of change of a bending direction, and the like of the display device 400 may be variously set through the display device 400.
  • change of a shape of the display device 400 by the multilayer transformable device may be variously set by the user, and is not limited to the above-mentioned example of shape change.
  • the multilayer transformable device is deformed into different shapes in response to various inputs. Specifically, a bent portion, a bending direction, a bending time, a period of change of a bending direction, and the like may be differently set for each input to the display device 400. Therefore, the display device 400 may be deformed into various shapes by the multilayer transformable device, thereby providing the user with various types of outputs.
  • FIGS. 5a, 5b, and 5c are diagrams illustrating examples in which multilayer transformable devices according to various embodiments of the present disclosure can be advantageously used.
  • FIG. 5a is a diagram illustrating an appearance of an electronic newspaper 500 including a multilayer transformable device according to an embodiment of the present disclosure.
  • the electronic newspaper 500 includes a display panel 510 and the multilayer transformable device which is attached to a lower portion of the display panel 510.
  • the electronic newspaper 500 including the multilayer transformable device may provide a feeling of actually reading a newspaper by the multilayer transformable device.
  • the multilayer transformable device in a portion receiving the input of the signal may be deformed.
  • a portion of the electronic newspaper 500 may be temporarily bent in response to the multilayer transformable device being deformed, and thus a feeling of turning a page as a newspaper may be provided.
  • a portion of the electronic newspaper 500 is deformed, thereby providing the fact that the article is uploaded.
  • the multilayer transformable device in a portion including the uploaded article is deformed, thereby immediately displaying the fact that the article is uploaded.
  • FIG. 5b is a diagram illustrating a watch 600 including a multilayer transformable device according to an embodiment of the present disclosure.
  • the watch 600 includes a display panel 610 and the multilayer transformable device which is attached to a lower portion of the display panel 610.
  • a description will be given on the assumption that the watch 600 is a smart watch for convenience of description.
  • various functions of the watch 600 may be implemented by the multilayer transformable device.
  • General time information is displayed through the display panel 610 of the watch 600.
  • weather, news, and the like may be displayed through the display panel 610 of the watch 600.
  • the watch 600 may include a simple call function, and determine heart rate of the user wearing the watch 600.
  • the multilayer transformable device in the watch 600 may be contracted to tell time every hour on the hour or at a designated alarm time. In this way, time information may be provided by pressing a wrist of the user.
  • the multilayer transformable device in the watch 600 may be contracted when new weather information or a news is displayed, or a protrusion may be formed on a portion of the display panel 610 of the watch 600 when a call is received, thereby providing information. Further, when heart rate of the user measured through a portion of the watch 600 reaches a dangerous level, the multilayer transformable device in the watch 600 may be contracted or deformed, thereby a warning alarm to the user.
  • FIG. 5c is a diagram illustrating a curtain 700 that includes a multilayer transformable device according to an embodiment of the present disclosure.
  • the curtain 700 includes a display panel 710 and the multilayer transformable device which is attached to a lower portion of the display panel 710.
  • information about an external environment may be expressed in various manners by the multilayer transformable device.
  • outside weather may be displayed as a predetermined image through the display panel 710 of the curtain 700, and a specific state of weather may be expressed by changing a shape of the curtain 700.
  • a cloud may be displayed through the display panel 710 of the curtain 700, a portion of the curtain 700 may be bent by the multilayer transformable device according to a wind direction and a wind speed, and an area of the bent portion may vary.
  • a direction in which the curtain 700 may be actually folded or swing according to the wind direction may be expressed as a bending direction of the curtain 700, and the area of the bent portion of the curtain 700 may increase as wind strength increases.
  • the curtain 700 may be automatically rolled up or folded in a left or right direction.
  • the present disclosure may significantly enhance bending ability of a multilayer transformable device by alternately disposing different types of EAPs.
  • the present disclosure may decrease a driving voltage of a multilayer transformable device to a level lower than that of a conventional multilayer transformable device in which only a dielectric elastomer is stacked by disposing a transformable layer having a high permittivity and a sub-transformable layer.
  • the present disclosure may provide a multilayer transformable device including a sub-transformable layer which is disposed between unit transformable devices to function as an adhesive layer and has a significantly higher permittivity than that of a conventional adhesive layer.

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Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102034002B1 (ko) * 2014-08-26 2019-10-21 한국전자통신연구원 디스플레이 장치 및 그 제조 방법
EP3041059B1 (en) * 2014-12-31 2019-09-11 LG Display Co., Ltd. Multilayer actuator and display device comprising the same
KR102489827B1 (ko) * 2015-12-31 2023-01-17 엘지디스플레이 주식회사 표시 장치
KR102696595B1 (ko) * 2016-07-27 2024-08-22 삼성디스플레이 주식회사 표시 장치용 윈도우 및 이를 포함하는 플렉서블 표시 장치
KR20180013321A (ko) * 2016-07-29 2018-02-07 삼성전자주식회사 디스플레이 장치 및 그 제어방법
KR102542197B1 (ko) * 2016-10-19 2023-06-13 삼성디스플레이 주식회사 플렉서블 표시 장치
KR102666083B1 (ko) * 2016-10-31 2024-05-13 엘지디스플레이 주식회사 접촉 감응 소자 및 이를 포함하는 표시 장치
JP6870835B2 (ja) * 2016-11-14 2021-05-12 国立研究開発法人産業技術総合研究所 積層アクチュエータ
US10820455B2 (en) * 2016-11-22 2020-10-27 Samsung Display Co., Ltd. Display device
CN106875850A (zh) 2017-04-18 2017-06-20 京东方科技集团股份有限公司 一种柔性显示屏及其变形驱动方法、显示装置
US10396272B2 (en) * 2017-05-04 2019-08-27 International Business Machines Corporation Display distortion for alignment with a user gaze direction
CN107229308A (zh) * 2017-06-06 2017-10-03 天王电子（深圳）有限公司 一种可变曲面结构及其应用
KR102353699B1 (ko) * 2017-06-23 2022-01-19 엘지디스플레이 주식회사 터치 스크린 일체형 표시장치
CN109284023B (zh) * 2017-07-21 2021-01-26 京东方科技集团股份有限公司 触控面板及其制备方法和触控显示装置
JP6903538B2 (ja) * 2017-09-28 2021-07-14 株式会社豊田中央研究所 誘電体複合材料
KR102445118B1 (ko) * 2017-10-18 2022-09-19 엘지디스플레이 주식회사 접촉 감응 소자 및 이를 포함하는 표시 장치
US10541065B2 (en) * 2017-12-21 2020-01-21 The Boeing Company Multilayer stack with enhanced conductivity and stability
US10962791B1 (en) 2018-03-22 2021-03-30 Facebook Technologies, Llc Apparatuses, systems, and methods for fabricating ultra-thin adjustable lenses
US11245065B1 (en) 2018-03-22 2022-02-08 Facebook Technologies, Llc Electroactive polymer devices, systems, and methods
US11048075B1 (en) 2018-03-29 2021-06-29 Facebook Technologies, Llc Optical lens assemblies and related methods
DE102018221053A1 (de) * 2018-04-05 2019-10-10 Continental Reifen Deutschland Gmbh Vorrichtung zum Messen einer mechanischen Kraft, umfassend eine erste, zweite, dritte, vierte und fünfte Schicht sowie die Verwendungen der Vorrichtung und Reifen oder technischer Gummiartikel umfassend die Vorrichtung
CN108845715A (zh) * 2018-09-05 2018-11-20 业成科技（成都）有限公司 触控显示装置及触控显示装置的制造方法
US10860101B1 (en) 2018-11-21 2020-12-08 Facebook Technologies, Llc Systems and methods using patterned nanovoids for actuation and deformation sensing
US11233189B2 (en) 2018-12-11 2022-01-25 Facebook Technologies, Llc Nanovoided tunable birefringence
US11139756B2 (en) * 2018-12-11 2021-10-05 Facebook Technologies, Llc Transducers with electrostatic repulsion and associated systems and methods
US11073914B2 (en) * 2018-12-28 2021-07-27 Lg Display Co., Ltd. Vibration generation device, and display apparatus and vehicle comprising the same
US11256331B1 (en) 2019-01-10 2022-02-22 Facebook Technologies, Llc Apparatuses, systems, and methods including haptic and touch sensing electroactive device arrays
JP2020137281A (ja) * 2019-02-20 2020-08-31 三菱重工業株式会社 電動アクチュエータ
US11627418B1 (en) * 2019-03-12 2023-04-11 Meta Platforms Technologies, Llc Multilayer membranes for haptic devices
CN110299468B (zh) * 2019-06-27 2021-07-30 江苏集萃有机光电技术研究所有限公司 一种发光器件
CN110444659B (zh) * 2019-08-23 2023-09-26 安徽四惠电缆有限公司 一种具有优异极化性能的0-3型压电复合材料
FR3105169B1 (fr) * 2019-12-19 2021-12-10 Latecoere Porte d’aéronef à verrou de blocage de sécurité comportant une biellette à polymère électroactif
CN111131949A (zh) * 2019-12-25 2020-05-08 中国航空工业集团公司西安飞机设计研究所 一种柔性振动装置
WO2023242898A1 (ja) * 2022-06-13 2023-12-21 順治 曽根 センサ
CN115050265A (zh) * 2022-06-28 2022-09-13 合肥维信诺科技有限公司 显示模组的制造方法、显示模组及显示装置

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6809462B2 (en) * 2000-04-05 2004-10-26 Sri International Electroactive polymer sensors
US6781284B1 (en) * 1997-02-07 2004-08-24 Sri International Electroactive polymer transducers and actuators
DE69832444T2 (de) * 1997-09-11 2006-08-03 E.I. Dupont De Nemours And Co., Wilmington Flexible Polyimidfolie mit hoher dielektrischer Konstante
US7233097B2 (en) * 2001-05-22 2007-06-19 Sri International Rolled electroactive polymers
JP2005522162A (ja) * 2002-03-18 2005-07-21 エスアールアイ インターナショナル 流体を移動させる電気活性ポリマーデバイス
DE10324579A1 (de) * 2003-05-30 2004-12-16 Daimlerchrysler Ag Bedienvorrichtung
DE102005003548A1 (de) * 2004-02-02 2006-02-09 Volkswagen Ag Bedienelement für ein Kraftfahrzeug
WO2005117170A2 (en) * 2004-03-09 2005-12-08 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Multilayer electroactive polymer composite material
JP4788533B2 (ja) * 2006-09-06 2011-10-05 ヤマハ株式会社 鍵駆動制御システム
WO2009144972A1 (ja) * 2008-05-29 2009-12-03 株式会社村田製作所 シート型振動体および音響機器
CN101715626A (zh) * 2008-06-11 2010-05-26 松下电器产业株式会社 导电性高分子致动器及其制造方法
KR101658991B1 (ko) * 2009-06-19 2016-09-22 삼성전자주식회사 터치 패널 및 이를 구비한 전자 기기
JP5291551B2 (ja) 2009-06-26 2013-09-18 株式会社クレハ 高分子組成物および高分子圧電体フィルム
FR2950154B1 (fr) 2009-09-15 2011-12-23 Commissariat Energie Atomique Dispositif optique a membrane deformable a actionnement piezoelectrique en forme de couronne continue
US8669952B2 (en) * 2011-06-09 2014-03-11 Sharp Laboratories Of America, Inc. Metallic nanoparticle pressure sensor
KR101631892B1 (ko) * 2010-01-28 2016-06-21 삼성전자주식회사 터치 패널 및 이를 구비한 전자기기
KR101809191B1 (ko) * 2010-10-11 2018-01-18 삼성전자주식회사 터치 패널
CN103765620A (zh) 2011-03-07 2014-04-30 拜耳材料科技股份有限公司 具有电活性层的层复合物
KR101784436B1 (ko) * 2011-04-18 2017-10-11 삼성전자주식회사 터치 패널 및 이를 위한 구동 장치
JP5308603B1 (ja) 2012-02-15 2013-10-09 バンドー化学株式会社 圧電素子、アクチュエータ素子、アクチュエータ、発電素子、発電デバイス及び可撓性シート
US9966526B2 (en) 2012-06-05 2018-05-08 Mitsui Chemicals, Inc. Piezoelectric device and process for producing piezoelectric device
KR101915064B1 (ko) 2012-08-23 2018-11-05 삼성전자주식회사 플렉서블 장치 및 그 동작 방법
JP5686443B2 (ja) * 2013-01-10 2015-03-18 日本写真印刷株式会社 接着層付きフィルム状感圧センサとこれを用いたタッチパッド、タッチ入力機能付き保護パネル及び電子機器
KR102048922B1 (ko) * 2013-02-13 2020-01-09 삼성디스플레이 주식회사 플렉시블 디스플레이 장치
KR101540067B1 (ko) * 2013-09-12 2015-07-30 한국과학기술연구원 플렉시블 전자소재용 탄성중합체-전도성 필러 복합체 및 이의 제조방법
KR20150043138A (ko) * 2013-10-14 2015-04-22 삼성전기주식회사 필름형 햅틱 디바이스, 햅틱 피드백 전자장치 및 햅틱 키보드
US20150316986A1 (en) * 2014-05-01 2015-11-05 Samsung Display Co., Ltd. Apparatus and method to realize dynamic haptic feedback on a surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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US9836125B2 (en) 2017-12-05
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CN105742480B (zh) 2018-11-16
JP6339996B2 (ja) 2018-06-06
CN105742480A (zh) 2016-07-06

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